Solaris Energy Infrastructure, Inc.
MX ˙ BMV ˙ US83418M1036
SecurityMX:SEI / Solaris Energy Infrastructure, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership390,470 shares
Latest Disclosed Value $ 22,065,460
Northern Trust Corp reports 8.24% increase in ownership of SEI / Solaris Energy Infrastructure, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 390,470 shares of Solaris Energy Infrastructure, Inc. (MX:SEI) valued at $22,065,460 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 360,751 shares of Solaris Energy Infrastructure, Inc.. This represents a change in shares of 8.24% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 390,470 29,719 8.24 22,065 33.06 0.0006
2026-02-17 2025-12-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 360,751 26,753 8.01 16,584 24.23 0.0004
2025-11-14 2025-09-30 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 333,998 5,852 1.78 13,350 43.80 0.0004
2025-08-13 2025-06-30 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 328,146 -27,211 -7.66 9,283 20.06 0.0013
2025-05-13 2025-03-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 355,357 42,810 13.70 7,733 -14.04 0.0011
2025-02-14 2024-12-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 312,547 52,285 20.09 8,995 170.93 0.0013
2024-11-13 2024-09-30 13F SOLARIS ENERGY INFRAS COM 83418M103 260,262 -18,438 -6.62 3,321 38.85 0.0005
2024-08-14 2024-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 278,700 -12,329 -4.24 2,391 -5.23 0.0004
2024-05-14 2024-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 291,029 -8,713 -2.91 2,523 5.79 0.0004
2024-02-13 2023-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 299,742 17,571 6.23 2,386 -20.69 0.0004
2023-11-13 2023-09-30 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 282,171 -16,481 -5.52 3,008 20.91 0.0006
2023-08-11 2023-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 298,652 13,023 4.56 2,488 1.97 0.0005
2023-05-15 2023-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 285,629 -2,008 -0.70 2,439 -14.60 0.0005
2023-02-13 2022-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 287,637 6,156 2.19 2,856 8.39 0.0006
2022-11-14 2022-09-30 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 281,481 -2,486 -0.88 2,635 -14.70 0.0006
2022-08-12 2022-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 283,967 3,925 1.40 3,089 -2.31 0.0007
2022-05-13 2022-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 280,042 -19,670 -6.56 3,162 61.00 0.0006
2022-02-08 2021-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 299,712 -22,683 -7.04 1,964 -26.96 0.0003
2021-11-15 2021-09-30 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 322,395 12,673 4.09 2,689 -10.87 0.0005
2021-08-13 2021-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 309,722 10,006 3.34 3,017 -17.95 0.0005
2021-05-12 2021-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 299,716 -31,625 -9.54 3,677 36.39 0.0007
2021-02-11 2020-12-31 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 331,341 -19,323 -5.51 2,696 21.28 0.0005
2020-11-16 2020-09-30 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 350,664 -14,665 -4.01 2,223 -18.00 0.0005
2020-08-14 2020-06-30 13F SOLARIS OILFIELD INFRSTR COM 83418M103 365,329 -73,323 -16.72 2,711 17.77 0.0006
2020-05-14 2020-03-31 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 438,652 -81,097 -15.60 2,302 -68.36 0.0007
2020-02-14 2019-12-31 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 519,749 -91,941 -15.03 7,276 -11.37 0.0016
2019-11-13 2019-09-30 13F SOLARIS OILFIELD INFRSTR COM 83418M103 611,690 53,133 9.51 8,209 -1.90 0.0020
2019-08-13 2019-06-30 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 558,557 104,144 22.92 8,368 12.02 0.0020
2019-05-13 2019-03-31 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 454,413 23,211 5.38 7,470 43.30 0.0018
2019-02-12 2018-12-31 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 431,202 76,602 21.60 5,213 -22.18 0.0015
2018-11-14 2018-09-30 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 354,600 44,058 14.19 6,699 50.95 0.0016
2018-09-18 2018-06-30 13F/A-1 SOLARIS OILFIELD INFRSTR COM CL A 83418M103 310,542 77,430 33.22 4,438 14.97 0.0011
2018-08-14 2018-06-30 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 313,369 80,257 4,478
2018-05-09 2018-03-31 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 233,112 11,308 5.10 3,860 -18.72 0.0010
2018-02-14 2017-12-31 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 221,804 109,571 97.63 4,749 142.79 0.0012
2017-11-13 2017-09-30 13F SOLARIS OILFIELD INFRSTR COM 83418M103 112,233 -537 -0.48 1,956 50.46 0.0005
2017-08-11 2017-06-30 13F SOLARIS OILFIELD INFRSTR COM 83418M103 112,770 112,770 1,300 0.0004
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.